4-20 mA Shaft Speed Sensors
Features
• 2-wire, loop-powered 4-20 mA analog output
• No user calibration: works right out of the box
• Works with shaft-mounted pulser targets (disc/wrap)
• Rugged stainless steel M18x1 housing
with integral conduit attachment
• Reverse-wiring protected
• FM approved, Dust-Ignition-Proof Class II, Div I (E, F, G)
• NEMA 4X, IP65
ST420-LT Integral ½ in flexible liquid-tight conduit fitting
ST420-DI Integral ½ NPT female conduit port
The patented ST420-LT and ST420-DI detect passing magnets of a shaft-mounted pulser disc or wrap and output a smooth, continuous 4-20 mA analog signal in direct proportion to shaft rotation speed.
Custom speed and pulser disc/wrap PPR ST420-LT and ST420-DI models are available upon request.
Optional EZ-18mm Easy Sensor Mount
(see EZ-18mm page for more details)
Features
• Mounts directly to the tapped shaft
• Can be used with optional
Mounting Magnet if the shaft is not tapped
• Pulser disc is included with optional EZ-18mm
• EZ-18mm is for Series 18, ST420
Series, and SpeedTalker Sensors